nelson



(No Model.)

l v 3 Sheets-Sheet 1. E. NELSON.

SEGTIONAL -FEED WATER HEATER.

Paten dJ 119528, 1892.

64% JMW @$715 Gou-lm (No Model.) 3 Sheets-Sheet 2.

E. NE'LSGN. SEGTIONAL FEED WATER HEATER.

. Snom/woz ngi Z @11 Meflifozmeg we noms Evans co., Mom-muc., msnm-nw", n. c.

3 N 0 S L E N SEG'TIONAL FEED WATER HEATER.

No. 477,816. `lafentedJ1`1ne`28, 1892.

33M; IM/ Glicine? as/.WA

*UNITED STAT-Es? PATENT OFFICE.,

SECTIONAL FEED-WATER H EATER.

SPECIFICATION forming part of Letters Patent No. 477,816, dated June 28, 1892.

Application filed February 4, 18922. Serial No. 420,321. (No model.)

To all whom it may concern:

of the United States, residing at New York, in the county of New York and State of New `York, have invented certain new and useful broadlyin connecting up with the different sections of the said heater or with groups of the saidsections the exhaust from the boilerpump and a branch of theexhau'st from the engine, the connection being such that the sections or groups of sections are in multiple between the said; branch exhaust-pipe and the main exhaust-pipe from the engine.. By the arrangement indicated I bring it about that thesteam which is used for heating the feed-water is applied to small portions of the feed-Water while the steam is at a great heat, and that in this way the greatest efficiency is secured. Moreover, by passing the steam after utilization in the heater out at the main exhaust-pipe I insure a free exit and guard against clogging or backing in the apparatus. As a matter of fact, a vacuum is createdin the main exhaust-pipe, or rather in an intermediate pipe connected thereto, which vacuum greatly facilitates the action.

e My invention will be fully understood yby reference to the accompanying drawings,'in

which- Figure 1 is an elevation of my feed-water heater. Fig. 2 is a detail view, partly sectional, showing a form of coupling which I use with my heater and which forms a part of my invention. Fig. 3 illustrates still another forrn of coupling by a similar view, and Fig. 4 shows a modified form of coupling.

Referring to the drawings, l, 2, 3, 4, 5, 6, 7, 8, and 9 are sections united in series and forming all together the body of my feed-water heater. Each section consists of a pipe Within a pipe, the interior pipe conveying the steam and the exterior pipe the feed-water.. The pipes are connected from section to section by suitable couplings, which will be described Be it known that I, ELIHU NELSON, a citizen in detail further on.

10 is the engine, and 1l the boiler-pump.

The latter pumps the water through the pipes 1,2.and 13 into the outer pipe of section 9, and sothrough the whole series. The water issues from section l by way of the pipe 14 and passes to a purifier 15 and out at the pipe 16. The purifier is simply a verticalI receiver through which the 'heated feed-water passes, and it is provided with a surface blow-off 17 at the top andwith a vertical pipe 18 at the bottom, through which the sediment in the bottom of the purifier can be drawn olf as often as may be found necessary. A pipe 19, forming the exhaust-pipe from the boiler-pump, leads to the inner pipe of section 1 and carries the steamexhaust from the boiler to the said inner pipe, whence it passes through the inner pipes of sections 1, 2, and 3. Beyond the last-named section it enters, through the pipe 20, a pipe 21, which is joined through a valve 22 to the main exhaust-pipe 23, running from the engine 10. At 24 I show a branch exhaust-pipe from the engine and vthis branch pipe is itself. branched, so as to form multiple paths through the inner pipes of succeeding sections or groups of sections. In the present instance I so arrange the branches that the steam from the exhaustpipe 24 passes off at various points through two sections of the feed-water heater, as shown. Referring to Fig. l, it will be seen that the branch most remote from the engine passes through sections 2 andl 3, the next branch passes through sections 4 and 5, the next branch through sections 6 and '7, and the next branch through sections 8 and 9. All the branches referred to are joined to the pipe 21,

IOO

tically little difference in the temperature of j the steam which acts upon the different sections, as the amount of condensation which the steam undergoes in passing the entire' length of the pipe 24 is inconsiderable. In section 1, which is the last vsection through which the feed-water passes, it is met by the 'exhaust-steam from the boiler-pump and receives there its final increase of temperature. I have said that there is a free passage for the exhaust-steam from the engine, because it will be seen that the steam from the pipe 20, passing through the upper part of the pipe 21, will tend to create a vacuum, and thereby increase the facility with which the steam behind it passes through the said pipe 21. .Aside from section l of my feed-water heater the sections are connected up in multiple between the pipes 24 and 21, or practically between the branch and the main exhaust-pipe from the engine. the pipe 19 to be joined at 26 di-rectly to the in-ner pipe of the section here marked -2 wi'thout passing through section 1 at all-that is to say, section l may be dispensed with, if desired.

'lhe means for coupling successive sections f of my feed water-heater form, also, a part of i These means will best be understood by reference to Figs. 2, 3, and f the present invention.

4. Referring to Fig. 2, it will be seen that the 4outer pipe of section 1 is joined to the youter pipe of section 2 by means of Ts2'7 and 2S, screwed, respectively, to the outer ends of the said pipes and joined to'each other by a flanged joint. Connected with the T 28, where it surrounds the inner pipe of section 2,1 have a stufiingbox 29 to prevent leakage. The inner pipes ofthe section referred to are joined through the medium of a T 30 on the inner pipe of section 2 and -an L 31, bolted or secured by a flanged joint to the T 2'7. My

special attention has, however, beendirected to the-coupling which joins the sections -2 and 3, and this in Fig. 42 consists of three parts 32, 33, and 34. terparts in the form of Ts, having internal screw-threads for receiving both the outer 6o .andthe inner pipes of their respective sections and anges for coupling to their co-operating parts.

ling for succeeding sections of my feed-wa- It is obvious that I may causel The parts 32 and 33 arecoun- They are secured together by` flanged j ointsat 35, and are similarly secured i 4to ythe opposite ends of.. the goose-neck 34. The three parts 32, 33, and 34 constitute, when I joined together as described, an end coup-L ter heater. In Fig. 3 I show a .similar coup'- ling made up 'of only two parts 36 and 37, bolted together, as shown in the drawings. In Fig. 4 asimilar coupling is shown in a single casting 3S. In all three of the forms illustrated the part which corresponds to the` goose-neck 34 in Fig. 2 is the part with which the inner pipe is connected, and in all three forms there is a passage 39 for allowing the water to pass from outer pipe to outer pipe of succeeding sections.

It will be observed that this kind of coupling is used at only one end of the sections,

`the coupling at the other end being sulficient-ly clear from the drawings, taken in connection with the description which I have given of the parts 27, 28, a-nd 29.

I prefer the form shown in Fig. 4; but I do not wish to limit myself tothe ,use of that form alone.

It will be seen that my feed-water heater is supported upon suitable standards (which may be pipes) 40 40 and that it is stayed by suitable straps 41 41. The part 42 isa trap for letting off the waters of condensation, and 43 is a drip-cock, the function of which need not be described.

1. In a sectional feed-water heater, a steampipe, a pipe exhausting to the air, and a series of sections connected up in multiple between the two pipes aforesaid, as and for the purpose set forth.

2. In a sectional feed-water heater, an exhaust-pipe from the engine, a second pipe exhausting to the air, anda series of sections connected up inmultiple between .the two pipes aforesaid, as and for the purpose set forth` 3. In a sectional feed-water heater, a main exhaust-pipe from the engine opening to the air, a branch exhaustdpipe from the engine, and a series of sections connected up inmultiple between the two pipes aforesaid, as and for the purpose set forth.

4. In asectional feed-water heater, va steam pipe, a pipe exhausting tothe air, and a series of sections connected .up in multiple between the two pipes aforesaid, all in combination with a boiler-pump and an exhaustpipe therefrom joined to the last section or sections of the feed-water heater, as and for the purpose set forth.

5. In a sectional feed-water heater, lan exhaust-pipe from the engine, a second pipe exhausting to the air, and a series of sections connected up in multiple between the two pipes aforesaid, all in combination with a boiler-pump and an exhaust-pipe therefrom joined to the last section or sections of the feed-water heater, as and for the purposeset forth.

6. :In a sectional feed-water heater, .a .main exhaust-pipe from the engine opening to the air, a branch exhaust-pipe from the engine, and a series of sections connected vup in multiple between the two pipes aforesaid, all in IOO 'combination with a boiler-pump and anexhaust-pipe therefrom joined to the last section or sections of the feed-water heater, as

and for the purpose set forth.

7. In a sectional feed-water heater, a main exhaust-pipe fromthe engine opening to the air, a branch exhaust-pipe from the engine, an adjustable valve in the main exhaust-pipe beyond the branching point, and a series of sections connected up in multiple between the two pipes aforesaid, as and for the purpose set forth.

S. In a sectional feed-water heater, a. main exhaust-pipe from the engine opening to the air, a branch exhaust-pipe from the engine,

an adjustable valve in the main exhaust-pipe` beyond the branching point, and a series of sections connected up in multiple between the two pipes aforesaid, all in combination with aboiler-pnmp and an exhaust-pipe therefrom joined to the last section or sections of the feedwater heater, as and for the purpose set forth.

9. In a sectional feed-Water heateiya series of sections, each consisting of apipe within a pipe, and a coupling for joining two succeeding sections, consisting of a return-bend having internally-screw-threaded openings for receiving the ends of the pipes, a goose-neck joining the ends ofthe interior pipes, and an internal passage joining the ends of the outer pipes, as and for the purpose set forth.

lO. A pipe-coupling havinginternal screwthreads for receiving pipes of different diame ters and provided with anges in' planes at l ELIHU NELSON.

Witnesses:

J. B. CONKLING, G. H. STOCKBRIDGE. 

